Just over a month ago I posted on how to enable FILESTREAM in CTP-5 and the pre-CTP-6 build I was working with. Now that’s all changed! CTP-6 is a hybrid of the CTP-5 method and what will eventually be the methodology in RTM. The changes were made to separate the OS-level configuration from the SQL-level configuration, so a SQL admin can’t invoke OS-level changes. This makes sense to me.